Definition: GEOS

(1) For GEO communications satellites, see GEO.

(2) (Graphic Environment Operating System) An earlier graphical user interface (GUI) and application platform from Breadbox Computer Company. Originally developed by Geoworks Corporation, GEOS was first available for the 8-bit Commodore 64 and Apple II in the mid-1980s.

In 1990, PC/GEOS was introduced for DOS-based PCs, and GEOS ran under various DOS versions in notebook computers and handhelds, including Brother's GeoBook and Nokia's Communicator. GEOS was also the first front end to AOL's website, and GEOS SC was a 32-bit version used by Mitsubishi for cellphones in Japan.

DOS-Based GEOS Suites
Breadbox Ensemble (formerly Geoworks Ensemble) included GEOS-based productivity apps and utilities. A School Suite included educational apps, and an Android tablet pre-loaded with GEOS School Suite was proposed.

GEOS was first licensed to Breadbox, Geoworks' largest application developer and training organization. Breadbox acquired the rights to GEOS software in 2003. See Commodore 64, Apple II and DOS.

Breadbox School Suite

School Suite included a raft of educational applications for the GEOS platform. (Image courtesy of Breadbox Computer Company.)